7478972953 has 2 divisors, whose sum is σ = 7478972954. Its totient is φ = 7478972952.

The previous prime is 7478972933. The next prime is 7478972981. The reversal of 7478972953 is 3592798747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7464441609 + 14531344 = 86397^2 + 3812^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7478972953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7478972891 and 7478972900.

It is not a weakly prime, because it can be changed into another prime (7478972933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3739486476 + 3739486477.

It is an arithmetic number, because the mean of its divisors is an integer number (3739486477).

Almost surely, 2^7478972953 is an apocalyptic number.

It is an amenable number.

7478972953 is a deficient number, since it is larger than the sum of its proper divisors (1).

7478972953 is an equidigital number, since it uses as much as digits as its factorization.

7478972953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 61.

The square root of 7478972953 is about 86481.0554572503. The cubic root of 7478972953 is about 1955.6028171373.

The spelling of 7478972953 in words is "seven billion, four hundred seventy-eight million, nine hundred seventy-two thousand, nine hundred fifty-three".